This study was supported in part by Postdoctoral Fellowship MF-9498-1 from the National Institutes of Mental Health, Public Health Service, and by Medical Research Foundation of Oregon.

This study was supported in part by Postdoctoral Fellowship MF-9498-1 from the National Institutes of Mental Health, Public Health Service, and by Medical Research Foundation of Oregon.×

Samuel G. Fletcher (Ph.D., University of Utah, 1958) is a Postdoctoral Fellow of the National Institutes of Mental Health, and Research Associate in Speech Pathology at the University of Oregon Medical School, Crippled Children’s Division.

Samuel G. Fletcher (Ph.D., University of Utah, 1958) is a Postdoctoral Fellow of the National Institutes of Mental Health, and Research Associate in Speech Pathology at the University of Oregon Medical School, Crippled Children’s Division.×

Robert L. Casteel (M.A., University of Washington, 1961) is Instructor in Speech, Oregon State System of Higher Education, Portland Extension Center.

Robert L. Casteel (M.A., University of Washington, 1961) is Instructor in Speech, Oregon State System of Higher Education, Portland Extension Center.×

Doris P. Bradley (M.A., University of Florida, 1957) is Research Assistant in Speech Pathology, University of Oregon Medical School, Crippled Children’s Division.

Doris P. Bradley (M.A., University of Florida, 1957) is Research Assistant in Speech Pathology, University of Oregon Medical School, Crippled Children’s Division.×